Docs: github-mode: Fix typo

docs/src/content/pages/github-mode.mdoc

@@ -124,14 +124,14 @@ When you authorize on a server and get the following error from GitHub, you need
 
 To add a redirect URL:
 
-1. Open your app page using values of the `PUBLIC_KEYSTATIC_GITHUB_APP_SLUG` environment variable
+1. Open your app page by using the value of the `PUBLIC_KEYSTATIC_GITHUB_APP_SLUG` environment variable:
    `https://github.com/apps/<app slug>`
 2. Select "App settings"
 3. Use "Add Callback URL" > Add the additional URL > Save
 
 Now try reloading the authentication page.
 
-If you don't have the app slug, use the [list of "Installed Github Apps"](https://docs.github.com/en/apps/using-github-apps/reviewing-and-modifying-installed-github-apps#navigating-to-the-github-app-you-want-to-review-or-modify) to find your app.
+If you don't have the app slug, use the [list of "Installed GitHub Apps"](https://docs.github.com/en/apps/using-github-apps/reviewing-and-modifying-installed-github-apps#navigating-to-the-github-app-you-want-to-review-or-modify) to find your app.
 - For Users: [`https://github.com/settings/installations`](https://github.com/settings/installations)
 - For Organisations: `https://github.com/organizations/<org name>/settings/installations`